What obstacl does monstresor face as he tries to achieve his goal?

Montresor faces the challenge of maintaining his composure and secrecy while executing his plan for revenge against Fortunato. He must skillfully manipulate Fortunato's pride and intoxication to lead him into the catacombs without arousing suspicion. Additionally, he grApples with the moral implications of his actions, as he is aware that his quest for vengeance may ultimately consume him.